With SMCSX you can see what your custom sweeps really look like.
It handles Sercel Custom files and INOVA’s SCI format.
Very easy to use, and the displays are quite customisable.
Details here:
https://seismatters.com/SMCSX.html
FWIW, this and the ability to convert between INOVA and Sercel formats is built into the soon to be released SMSIM3.
